|Publication number||US7882518 B2|
|Application number||US 12/418,409|
|Publication date||Feb 1, 2011|
|Filing date||Apr 3, 2009|
|Priority date||Mar 29, 1999|
|Also published as||DE60037061D1, DE60037061T2, EP1041824A2, EP1041824A3, EP1041824B1, US7552458, US20090193458|
|Publication number||12418409, 418409, US 7882518 B2, US 7882518B2, US-B2-7882518, US7882518 B2, US7882518B2|
|Inventors||Craig A. Finseth, Philip E. Hsiao, Jeffrey A. Brown, Robert G. Arsenault, Tam T. Leminh|
|Original Assignee||The Directv Group, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (103), Referenced by (25), Classifications (28), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a divisional of U.S. utility patent application Ser. No. 09/532,755 filed Mar. 22, 2000, now U.S. Pat. No. 7,552,458, which claims priority to U.S. provisional patent application Ser. No. 60/126,573, filed on Mar. 29, 1999 entitled “Method and Apparatus for Transmission, Receipt and Display of Advertisements.”
The present invention relates to the provision of television content and advertising to a receiver unit. Television programs are distributed to viewers by a variety of broadcasting methods. These methods include traditional analog broadcast television (National Television Systems Committee or “NTSC” standard), the upcoming digital broadcast television (Advanced Television Systems Committee or “ATSC” standard), cable television (both analog and digital), satellite broadcasting (both analog and digital), as well as other methods. These methods allow channels of television content to be multiplexed and transmitted over a common transmission medium.
Channel numbers are typically used to identify the stream of television content offered by a content provider. Program guide information is typically transmitted along with the television content. The program guide information includes a set of channel definition parameters that define which portions of the transmitted television content are associated with the various channels, and typically also includes schedule information for display on users' televisions. The schedule information informs users what television programs are currently on, and what television programs will be shown in the near future.
It would be desirable in a television broadcast system to be able to broadcast advertisements that are directed only to particular users, with each receiver determining whether the advertisement is appropriate for display based on characteristics such as geographic region of the receiver, subscription information and past viewing history. Specifically, using these characteristics, it would also be desirable that each receiver determines which broadcast advertisements are shown to a particular user, and when and how the broadcast advertisements are shown to that particular user.
The present invention is a method and apparatus for transmitting, receiving and displaying television content and advertising. The apparatus includes a transmission station and a plurality of receiver stations. The transmission station creates program guide data and advertising data that is in an “object” format. The transmission station combines the program guide and advertising objects with digital audio and video television signals, and transmits an output stream to the plurality of receiver stations. Each of the plurality of receiver stations receives the transmitted output stream and identifies the electronic program guide objects and advertising objects within the output stream. Each of the plurality of receiver stations stores the identified electronic program guide and advertising objects.
The present invention varies the display of advertisements in the electronic program guide depending on the user. In the present invention, the receiver identifies the user who is watching, that user's viewing history and preferences, which advertisements have already been shown to that viewer, and which channels the viewer is currently looking at in the electronic program guide, and uses the identified information to determine which advertisements will be shown to that particular user. The receiver also uses the identified information to select the best timing, placement, and size of advertising shown to a particular user. Broadcast advertising which the receiver determines poorly matches a user may be discarded in favor of what the receiver determines better matches that viewer, thereby making better use of the finite memory space available to the receiver, and better use of advertising time and space in the electronic program guide.
Television broadcasting system 20 includes transmission station 26, uplink dish 30, satellite 32, and receiver stations 34A-34C (collectively referred to as receiver stations 34). Transmission station 26 includes a plurality of input lines 22 for receiving various signals, such as analog television signals, digital television signals, video tape signals, original programming signals, and computer generated signals containing HTML content and digital video server signals. Each input line 22 typically corresponds to a single television channel. Transmission station 26 also includes a plurality of schedule feeds 24 and advertising feeds 25. Schedule feeds 24 provide electronic schedule information about the timing and content of various television channels, such as that found in television schedules contained in newspapers and television guides. Advertising feeds 25 provide advertising data and information about the content of individual advertisements. The electronic schedule information from schedule feeds 24 is converted into program guide data by transmission station 26. Similarly, information from advertising feeds 25 is converted into advertising data by transmission station 26.
Transmission station 26 receives and processes the various input signals received on input lines 22, advertising feeds 25 and schedule feeds 24, converts the received signals into a standard form, combines the standard signals into a single output data stream 28, and continuously sends output data stream 28 to uplink dish 30. Output data stream 28 is preferably a modulated signal, which is modulated by transmission station 26 using standard frequency and polarization modulation techniques. In a preferred embodiment, output data stream 28 is a multiplexed signal including 16 frequency bands. Transmission station 26 is described in further detail below with respect to
Uplink dish 30 continuously receives output data stream 28 from transmission station 26, amplifies the received signal and transmits the signal to satellite 32. Although a single uplink dish and satellite are shown in
Satellite 32 revolves in geosynchronous orbit about the earth. Satellite 32 includes a plurality of transponders that receive signals transmitted by uplink dish 30, amplify the received signals, frequency shift the received signals to higher frequency bands, and then transmit the amplified, frequency shifted signals back to receiver stations 34. A total of 32 transponders are preferably used in the present invention.
Receiver stations 34 receive and process the signals transmitted by satellite 32. Receiver stations 34 include hardware and software for separating the electronic program guide data and advertising data from the received signals, and processing both the electronic program guide data and the advertising data. Receiver stations 34 are described in further detail below with respect to
Program transmitting system 44 includes input signal adapters 36A-36D (collectively referred to as input signal adapters 36), analog to digital (A/D) converters 38A-38D (collectively referred to as A/D converters 38), and combiner 42. Input signal adapters 36 are coupled to A/D converters 38, and A/D converters 38 are coupled to combiner 42. Although four input signal adapters 36 and four A/D converters 38 are shown in
Input signal adapters 36 receive input signals from input lines 22, and convert the input signals to a standard form. As mentioned above, signals from input lines 22 include analog television signals, digital television signals, video tape signals, original programming signals, computer generated signals containing HTML content and digital video server signals. Also, input lines 22 can receive signals from digital video servers having hard discs or other digital storage media. Input signal adapters 36 preferably convert the input signals to a high quality analog format. The high quality analog signals are output by input signal adapters 36 to A/D converters 38. A/D converters 38 convert the analog signals received from input signal adapters 36 to digital signals, and compress the digital signals using MPEG2 encoding, although other compression schemes may be used.
During the MPEG2 encoding step, A/D converters 38 also perform a statistical multiplexing operation. During the statistical multiplexing operation, A/D converters 38 determine the amount of bandwidth that each channel will use. The amount of bandwidth allowed for each channel is determined based upon the content of the signal on that channel, and the amount of bandwidth used by other channels. For a program such as the motion picture “Independence Day”, which has a very dynamic picture content with a great deal of movement and numerous bright explosions, the signal can not be compressed as much as a more static video signal like an information channel. The greater the dynamic content of the signal, the less it can be compressed and the greater the bandwidth required.
Typically, 30 Mega bits of data per second are transmitted by uplink dish 30 for each transponder in satellite 32. Each transponder receives and transmits data for about 6 channels. Thus, each channel occupies approximately 5 Mega bits of data per second, on average. During the statistical multiplexing operation, the amount of compression for each channel, and correspondingly the amount of information transmitted for each channel, is adjusted up or down depending upon the amount of available space for each transponder. Combiner 42 feeds back information to A/D converters 38 during the statistical multiplexing operation, informing A/D converters 38 of the amount of bandwidth used by various channels. A/D converters 38 then adjust the amount of compression of a signal based on the information fed back from combiner 42.
The MPEG2 encoded digital data are output by A/D converters 38 to combiner 42. Combiner 42 groups the MPEG2 encoded digital data from each A/D converter 38 into a plurality of packets, with each such packet marked with a service channel identification (SCID) number. The SCIDs are later used by receiver 64 (shown in
Program transmitting system 44 processes audio signals in the same manner as video signals, and combiner 42 combines digital audio signals with the digital video signals. Combiner 42 also receives advertising and electronic program guide data from input lines 58 (as described below with respect to the advertisement program guide transmitting system 46) and adds that data to output data stream 28. The assembly and processing of the electronic program guide data prior to it being sent to combiner 42 is described in more detail below.
Output data stream 28, which is output by combiner 42, is a multiplexed signal that is modulated by combiner 42 using standard frequency and polarization modulation techniques. Output data stream 28 preferably includes 16 frequency bands, with each frequency band being either left polarized or right polarized. Because there are 32 transponders in the preferred embodiment, each of the 16 frequency bands are shared by two transponders. Therefore, transponder 1 is assigned frequency 1, left polarization; transponder 2 is assigned frequency 1, right polarization; transponder 3 is assigned frequency 2, left polarization, etc.
Also shown in
Schedule feeds 24 provide electronic schedule information about the timing and content of various television channels, such as that found in television schedules contained in newspapers and television guides. Schedule feeds 24 also provide HTML content. Advertising feeds 25 provide information describing various advertisements and provide the content for individual advertisements.
Database 48 is a computer-based system that receives data from schedule feeds 24 and advertising feeds 25 and organizes data into a standard format. Program guide data and HTML data may also be manually entered into program guide database 48 through data entry station 50. HTML data can be created with commercially available applications, including Claris software, Microsoft software and Adobe software. Compiler 52 reads the standard form data out of database 48, converts the data into the proper format for transmission to users (specifically, the data is converted into program guide and HTML objects as discussed below) and outputs the data to one or more of sub-databases 54. Compiler 52 includes a filter program for HTML data that makes sure that only the subset of HTML version 4.0 that is defined in receiver 64 (shown in
The program guide, advertising and HTML objects are temporarily stored in sub-databases 54 until cyclers 56 request the information. Each of cyclers 56 preferably transmits objects to combiner 42 at a different rate than the other cyclers 56. For example, cycler 56A may transmit objects to combiner 42 every second, while cyclers 56B and 56C may transmit objects every 5 seconds and every 10 seconds, respectively.
Because receiver 64 (shown in
All of the objects output by the plurality of cyclers 56 are combined by combiner 42. Combiner 42 combines the objects with the digital video and audio data output by A/D converters 38 on output lines 40. Combiner 42 transmits output data stream 28, which includes the advertising data, the program guide data, HTML data and the digital video and audio data, to uplink dish 30.
Prior to transmitting data to sub-databases 54, compiler 52 organizes the program guide and advertising data from database 48 into objects. Each object preferably includes an object header and an object body. The object header identifies the object type, object ID and version number of the object. The object type identifies the type of the object. Various types of objects are discussed below. The object ID uniquely identifies the particular object from other objects of the same type. The version number of an object uniquely identifies the object from other objects of the same type and object ID. The object body includes data for constructing a portion of a program guide or an advertisement that is ultimately displayed on a user's television, and is also used for channel definition parameters.
Prior to transmission, each object is preferably broken down by compiler 52 into multiple frames. Each frame is made up of a plurality of 126 byte packets. Each frame includes a frame header, program guide data or advertising data and a checksum. Each frame header includes the same information as the object header described above—object type, object ID and version number. The frame header uniquely identifies the frame, and its position within a group of frames that make up an object. The checksum is examined by receiver 64 to verify the accuracy of the data within received frames.
The system described herein may use over 15 different object types. The objects that are used for providing channel definition parameters may include boot objects, channel list objects, channel objects and conditional objects. Advertising objects provide the characteristics of advertisements and point to other objects that contain the content of the advertisements. Other objects, such as HTML (Hyper Text Markup Language) objects, are used to provide channel and advertisement content. Still further objects, such as general program objects, general schedule objects and master schedule objects are used by receiver 64 to generate a display of a program guide on a user's television.
A boot object identifies the SCIDs where all other objects can be found. A boot object is always transmitted on the same channel, which means that each packet of data that makes up a boot object is marked with the same SCID number. Boot objects are transmitted frequently to ensure that receivers 64 that have been shut off, and are then turned back on, immediately receive information indicating the location of the various program guide objects. Thus, boot objects are sent from compiler 52 to a cycler 56 with a high rate of transmission.
Receiver dish 60 receives signals sent by satellite 32, amplifies the signals and passes the signals on to tuner 70. Tuner 70 operates under control of CPU 74. Tuner 70 is preferably two separate tuners, a first tuner for tuning to digital DSS and ATSC channels, and a second tuner for tuning to analog NTSC channels. The functions performed by CPU 74 are controlled by a control program stored in memory 78. Memory 78 also stores a parameter table, which includes a variety of parameters for receiver 64 such as a list of channels receiver 64 is authorized to process and generate displays for, the zip code and area code for the area in which receiver 64 is used, and the model number of receiver 64. Clock 76 provides the current local time to CPU 74. Interface 82 is preferably coupled to a telephone jack at the site of receiver station 34. Interface 82 allows receiver 64 to communicate with transmission station 26 via telephone lines. Interface 82 may also be used to transfer data to and from a network, such as the Internet.
The signals sent from receiver dish 60 to tuner 70 are digital signals that are grouped into a plurality of packets. Each packet includes a header that identifies the SCID number for the packet, and the type of data contained in the packet (e.g, audio data, video data, advertising data, or program guide data). Tuner 70 includes multiple output lines for transmitting video data, audio data, advertising data and program guide data. As packets are received from receiver dish 60, tuner 70 identifies the type of each packet and outputs each packet on the appropriate output line, as discussed in more detail below. If tuner 70 identifies a packet as program guide data or advertising data, tuner 70 outputs the packet to memory 78. Advertising data is stored in an advertising database in memory 78. Program guide data is stored in a guide database in memory 78.
In addition to the digital satellite signals received by receiver dish 60, other sources of television content are also preferably used. For example, alternate content source 62 provides additional television content to television 66. Alternate content source 62 is coupled to tuner 70. Alternate content source 62 can be an antenna for receiving off-the-air signals NTSC signals, a cable for receiving ATSC signals, or other content source. Although only one alternate content source 62 is shown, multiple sources can be used.
Initially, as data enters receiver 64, tuner 70 looks for a boot object. Boot objects are always transmitted with the same SCID, so tuner 70 knows that it must look for packets marked with that SCID. A boot object identifies the SCIDs where all other objects can be found. The information from the boot object is used by tuner 70 to identify packets of advertising data and program guide data and route them to memory 78.
As program guide data and advertising data are received and stored in the database in memory 78, CPU 74 performs various operations on the data in preparation for displaying a program guide or an advertisement on television 66. These operations include packet assembly, object assembly and object processing.
The first operation performed on the advertising and program guide data stored in the guide database in memory 78 is packet assembly. During the packet assembly operation, CPU 74 examines the stored advertising and program guide data and determines the locations of the packet boundaries.
The next step performed by CPU 74 is object assembly. During the object assembly step, CPU 74 combines packets to create object frames, and then combines the object frames to create program guide and advertising objects. CPU 74 examines the checksum transmitted within each object frame, and verifies whether the frame data was accurately received. If the object frame was not accurately received, it is discarded from memory 78. Also during the object assembly step, receiver 64 discards assembled objects that are of an object type that receiver 64 does not recognize. Receiver 64 maintains a list of known object types in memory 78. CPU 74 examines the object header of each received object to determine the object type. CPU 74 compares the object type of each received object to the list of known object types stored in memory 78. If the object type of an object is not found in the list of known object types, the object is discarded from memory 78.
The last step performed by CPU 74 on received program guide and advertising data is object processing. During the object processing step, the objects stored in the database are combined to create a digital image of a program guide. The objects stored in the database are also organized to create a digital image of an advertisement. The digital image of the program guide or advertisement is later converted to an analog signal that is sent to television 66 for display to a user.
Users select a particular channel to watch on television 66 using remote control 86. Remote control 86 emits infrared signals that are received by infrared (IR) receiver 84 in receiver 64. Other types of data entry devices may alternatively be used, such as an ultra-high frequency (UHF) remote control, a keypad on receiver 64, a remote keyboard and a remote mouse. Channels are preferably selected using remote control 86 to navigate around an electronic television program guide, such as program guide 88 shown in
Program guide 88 includes grid 90, cells 92, channel list 94, scroll buttons 96A and 96B, time indicators 98A-98C (collectively referred to as time indicators 98), jump button 100, time button 102, day indicators 104, information window 106, and category buttons 108A, 108B and 108C (collectively referred to as category buttons 108). The various buttons and cells are highlighted by navigating around program guide 88 using remote control 86.
Grid 90 includes a plurality of cells 92. Each cell 92 includes a program title, and may provide additional information. Channel list 94 includes a list of channel names or channel numbers, or both. Channel list 94 may also include icons, such as icons that represent particular channels. The names and channel numbers for each entry in channel list 94 are obtained from the channel object for that entry. Time indicators 98A, 98B and 98C (referred to collectively as “time indicators 98”) indicate start and end times of the various programs displayed in grid 90. Although half-hour time blocks (a time block is the length of time between two time indicators 98) are shown in program guide 88, other time block lengths may be used. Scroll buttons 96A and 96B allow users to scroll up and down channel list 94 and display different channels. Day indicators 104 indicate the day for which program information is presently being displayed. In
Information window 106 provides additional information about programs displayed in grid 90. The type of information displayed in information window 106 depends on which category button 108A-108C is currently selected. Users select one of category buttons 108A-108C using remote control 86. As shown in
Program guide 88 preferably includes schedule information for numerous channels, including DSS channels, ATSC channels and NTSC channels, regardless of whether the channel content is actually transmitted by television broadcasting system 20. For instance, the embodiment shown in
Advertisements include trademark images, product images, text, or video, alone, or in combination, and can include accompanying audio. Traditionally, advertisements have been part of television content as it is being broadcast. Each television receiver displayed whatever advertisements happen to be broadcast to it in conjunction with the television programs selected for display. Once the television content and advertisements were broadcast to a receiver, there was virtually no intelligence or flexibility with regard to which advertisements are displayed to a television broadcast service user, or when and how those advertisements are displayed to the user.
The present invention provides a system for intelligently and flexibly displaying advertisements. According to the present invention each receiving station will display advertisements that other receiving stations will not necessarily display. In addition, each user of a particular receiver may not see the same advertisements as another user of the same receiver. Television content, program guide data and advertising data are broadcast to receiving stations as described above, receiver 64 monitors both which television programs are selected by a user and which advertisements it has received to tailor which of the received advertisements will be displayed to a user of receiver 64, in addition to how and when the advertisements chosen by receiver 64 will be displayed.
The advertisement display system includes three parts. The first part involves building a database of information regarding what viewing selections an individual user makes. Here, receiver 64 compiles information about the user's viewing history and uses that information to intelligently display advertisements to the user. Receiver 64 preferably tracks the user's viewing history and stores this information in a selection history table in memory 78. The selection history table is initially empty when receiver 64 is first purchased. For each program that is chosen by a user, receiver 64 stores information characterizing the program. The characterizing information is included in the program guide objects broadcast to the receiver as discussed above. When a user selects a program from program guide 88, the characterizing information from the associated program guide object is stored in the selection history table in memory 78.
The characterizing information may be organized into attributes. Attributes include information such as category descriptors that identify the type and category of program, name descriptors that identify the name of the program selected, credits information that identify the names and roles of those involved in the production of the program, and key words and phrases in the description of the program. Category descriptors preferably provide a two-tiered category classification, such as “sports/baseball” or “movie/drama,” although any number of tiers may be used including single tiers.
Attributes also include indicators that the program is one of a particular series or that the program is one of a group of associated programs. For example, each episode of “Star Trek, The Next Generation” will have the same series indicator. The “Star Trek” movies, and various “Star Trek” series will all have the same group indicator, even if they are not part of one particular series. CPU 74 keeps track of the program selections made by users, stores the attributes for selected programs in the selection history table and links the attributes to the current user.
In compiling a selection history table, receiver 64 preferably filters out programs the user has selected, but viewed for an insignificant time period. CPU 74 of receiver 64 preferably keeps track of the amount of time each program is watched using clock 76 and stores the times in the selection history table. If programs and channels are watched for a time more than a set threshold, 12 hours for example, the attributes for those channels and programs are not stored in the selection history table. If programs are watched for a time that is less than a set threshold, such as 30 seconds, the attributes for those programs are not stored in the selection history table. In this way, programs the user selects when “channel surfing,” or programs displayed when the user has forgotten to turn off the receiver are filtered out of the selection history table stored in memory 78.
In addition, in compiling a selection history table, receiver 64 preferably tracks a plurality of individual users' viewing preferences. When receiver 64 is first turned on, or after receiver 64 has not been interacted with for a predetermined time, receiver 64 prompts the user to identify himself or herself.
When a user enters one of descriptions 112A-112D with remote control 86, a user identification signal is sent to receiver 64. Receiver 64 receives the user identification signal, identifies the user and stores the attributes associated with that user's channel and program selections in a user-specific sub-history within the selection history table. Receiver 64 uses the selections made by each of the plurality of identified users to create and update the list of attributes linked with that user. In this way, the flexible advertising targeting techniques of the present invention can be specific to one of a plurality of users of one receiver 64.
As discussed earlier, advertisements are broadcast to receiver 64 along with television content and program guide data. Each advertisement comprises an advertising object which includes attributes associated with the advertisement and which points to other objects which contain content to assemble the advertisement for display. Receiver 64 determines how well a particular advertisement fits the individual user by comparing the attributes associated with the related advertising object with the attributes stored in the selection history table that are linked to the individual user's viewing history. Receiver 64 then determines which advertisements are assembled and displayed to the user, and when and how those advertisements are displayed to the user.
An example of a static advertisement displayed in program guide 88 is shown in
The second part of the advertising system involves correlating the characteristics of transmitted advertisements with the information compiled regarding individual users' viewing selections. Receiver 64 uses similarity matching to determine how well advertisements fit the information compiled and stored in the selection history table.
Receiver 64 uses a similarity algorithm to compare advertisements to the individual user's viewing preferences as described by the list of common attributes stored in the selection history table. The similarity algorithm used can weight certain attributes in order to calculate a similarity score tailored to a user in specific ways. The amount of weight given to a particular attribute (e.g., name descriptor) effects the relative similarity scores for the advertising objects, and therefore ultimately the priority in which these advertisements are displayed to the user.
For example, a fast food chain may tie certain items it serves to a movie or television program. The fast food chain advertisement that markets the tie-in may have an associated name descriptor that includes the name of the tied movie or television program. If the user has selected the tied movie or television program, the similarity algorithm which heavily weights the name descriptor attribute relative to the other attributes will insure that the fast food advertisement has a relatively high similarity score even though other attributes associated with the advertisement may not match the list of common attributes in the user's selection history. In this way, the user is likely to see advertisements tied to the programs the user has selected, regardless of how few of the advertisement's other associated attributes match the list of common attributes from the user's selection history table. Other similarity algorithms may be used to emphasize other attributes by weighting those attributes to further tailor advertisements to the user in other ways.
The example similarity algorithm explained below in reference to
According to the example similarity algorithm illustrated in
CPU 74 examines the advertisement and the selection history for category descriptors common to both the advertisement and the selection history and calculates a category score (Block 124). CPU 74 counts the number of category descriptors common to both the selection history table and the advertisement and weights the count by multiplying the count by five.
Next, CPU 74 examines the advertisement and the selection history for words common to the description fields of both the advertisement and the selection history table and calculates a description score (Block 126). CPU 74 filters out less significant words such as “and”, “is” and “the” in order to determine a more meaningful description score. CPU 74 counts the number of significant words common to both the selection history table and the advertisement and weights that number by multiplying the count by ten.
Next, CPU 74 calculates a name score by examining the name descriptors in both the advertisement and the selection history table (Block 128). CPU 74 counts the number of name descriptors common to both the selection history table and the advertisement. CPU 74 weights the count by multiplying the count by thirty.
Finally, CPU 74 calculates the similarity score for the advertisement by adding the category score, the description score, and the name score together (Block 130). The calculated score for that advertisement is stored in memory 78 (Block 132) so that CPU 74 can compare the newly calculated similarity score with similarity scores for other advertisements, and later use the calculated similarity score to determine when and how to display the advertisement.
The third part of the advertising system involves using correlations between the characteristics of advertisements and the compiled selection history to display advertisements in an individualized manner suited to each individual user. One example of receiver 64 using similarity scores to match advertisements to an individual user's preferences is to only display those advertisements which have at least a predetermined cutoff similarity score. As shown in
Another similar example of how similarity scores are used is illustrated in
Receiver 64 starts with the list of common attributes from the selection history table for a user as discussed earlier in reference to
CPU 74 compares the similarity score for the newly received advertising object to the lowest similarity score associated with the advertising object among the advertisements already stored in memory 78 (Block 154). If the newly received advertisement's score is lower than the lowest similarity score currently in memory 78, CPU 74 does not save the newly received advertisement in memory (Block 156). If the newly received advertisement's score is higher than the lowest similarity score currently in memory, CPU 74 replaces the advertising object with the lowest similarity score and its associated advertisement with the newly received advertising object and its associated advertisement (Block 158). In this way, receiver 64 assembles and displays advertisements drawn from a pool of advertisements in memory 78 that most closely matches the user's preferences. In addition, the finite space in memory 78 is occupied only by those advertisements that have relatively high similarity scores.
As mentioned earlier, according to the present invention, receiver 64 not only determines which advertisements to display, but also how and when to display the chosen advertisements according to how advertisements fit a user's selection history. For example, an advertising object having a high similarity score would be shown before an advertisement having a low similarity score. Also, an advertisement having a high similarity score would be shown more frequently and prominently on the display screen. In this way, users of the present invention see advertising customized to their interests and advertisements more likely meet an interested audience.
Receiver 64 uses the similarity scores for the set of advertisements to determine which advertisements to display (Block 168). For example, if of the three example advertisements, only the laundry detergent advertisement 160 and the corporate advertisement 162 have similarity scores above a predetermined threshold similarity score, only these two advertisements are displayed. On the other hand, soft drink advertisement 164 is not displayed if its associated similarity score was not at or above the similarity score threshold.
Similarly, receiver 64 uses the similarity scores for the set of advertisements to determine the priority and length of time for displaying the advertisements (Block 170). If, as in this example, the laundry detergent advertisement 160 has the highest similarity score, laundry detergent advertisement 160 is displayed before the corporate advertisement 162 and so on. In this way, the laundry detergent advertisement is most likely to be seen before the user selects a channel or turns receiver 64 off.
Alternative versions of the same advertisement are displayed according to the user's viewing preferences in the present invention. For example, each of the plurality of advertising objects stored in memory 78 can point to a plurality of different images (e.g., a different size, or a different graphic) for the advertisement. Receiver 64 uses the similarity score for each advertisement and determines which advertising image to display based on the similarity score for that advertising object (Block 172). For example, if CPU 74 determines soft drink advertisement 164 has a similarity score greater than a threshold similarity score, receiver 64 assembles and displays larger image 174 rather than smaller image 176 for soft drink advertisement.
Receiver 64 can use similarity scores in alternative ways to determine the image and timing of advertisements. For example, receiver 64 may simply compare the similarity scores of the advertisements currently in memory 78 and display the larger image of those advertisements which have a similarity score a predetermined percentage higher than the average similarity score for all of the advertisements currently stored in memory 78. By using the same techniques, receiver 64 also determines how long and how often to display a particular advertisement according to the similarity score of the associated advertising object for that advertisement.
Another technique for intelligently displaying advertisements according to the present invention is selective retention of advertisements. Receiver 64 retains advertisements that are interesting to an individual user so that the user can later view or interact with the retained advertisements. Each advertisement may have a predetermined viewing lifetime. The viewing lifetime data broadcast as part of the advertising object for that advertisement. CPU 74 uses the advertising lifetime to determine when and how long to display the associated advertisement. For example, an advertising object containing the data for assembling an advertisement for a newly introduced automobile may have a two month viewing lifetime from the date the automobile first becomes available to consumers. With the present invention, advertisements are retained beyond the predetermined viewing lifetime by receiver 64, if receiver 64 determines that the advertisement has at least a predetermined threshold similarity score. In this way, users are less likely to miss an opportunity to view or respond to interesting advertisements.
An example of this is shown in
Another aspect of intelligently displaying advertisements according to the present invention includes the ability of the user to interact with displayed advertisements. User interaction includes manipulating the display of advertisements, and the user requesting more information, or making purchases, in response to an advertisement. In addition, statistical data concerning which advertisements are shown is kept according to the present invention. The statistical data enables a broadcast service provider to collect information related to the advertisements it broadcasts.
One example of a user-manipulation of displayed advertisements is illustrated in
The user controls which image he sees by selecting the advertisement using remote control 86. Remote control 86 may have an array of buttons which allow the user to send an image altering signal to receiver 64.
When the user selects initial image 182A (
Another example of user interaction with displayed advertisements is illustrated in
For example, the user may respond to advertisement 196 for laundry detergent displayed in program guide 88 as shown in
Letters and numbers may be entered into the fields by using the navigation buttons 184A-184D to scroll through the alphabet and by using number pad 192 on remote control 86. Various other fields such as an email address field, receiver number field and receiver model field may be included or substituted for the fields shown on order screen 198. Once the requested information has been entered, the user sends the order by highlighting submit button 202 on order screen 198 and pressing enter button 186 on remote control 86. At any time before submitting an order, a user can return to program guide 88 by highlighting cancel button 204 on order screen 198 and pressing enter button 186 on remote control 86. Other methods of displaying an ordered message may be employed according to the present invention such as simply overlaying the ordered message on the current screen the user is viewing.
After receiver 64 has sent the stored requests to transmission station 26, receiver 64 acknowledges (Block 216) the request. Transmission station 26 sends an acknowledgment signal to receiver 64. When receiver 64 receives the acknowledgment signal, receiver 64 displays an “ordered” message to the user in a request summary screen (Block 218) and deletes from memory 78 the acknowledged requests.
An example of how an ordered message may be displayed in request summary screen 220 is shown in
For example, as shown in
Another feature of the present invention provides for a statistical accounting of the advertisements displayed to a user. The statistics provide valuable information which may later be used by the broadcast provider or advertisers to better target and price advertising. According to the present invention, advertising statistics for a user are reported to transmission station 26. Advertising statistics include the number of times a particular advertisement is displayed to a particular viewer, the number of times a user has selected the advertisement, or which advertisements prompted the user to request additional information such as brochures or samples.
Another aspect of the present invention involves compiling and reporting statistics on what advertisements are shown and reacted to by an individual user. The block diagram in
The present invention provides a method and apparatus to intelligently tailor the display of advertisements to individual users of a television broadcast system. Rather than displaying to the user whatever advertisements happen to be broadcast, the present invention provides for flexibly and intelligently tailoring advertisements to each individual user. The present invention tracks individual users and the programming choices they make and uses that information to tailor what advertisements are displayed to each individual user. The present invention makes it possible for each individual user to have a unique viewing experience both with regard to the programming he or she chooses, and with regard to the advertisements he or she chooses. In addition, advertisers can be better assured that users most interested in particular advertisements actually see those advertisements.
The above examples of intelligently displayed advertising are merely illustrative of the present invention, and are not the only ways in which the present invention may be implemented. Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4694490||Nov 3, 1981||Sep 15, 1987||Harvey John C||Signal processing apparatus and methods|
|US5153580||Jan 16, 1990||Oct 6, 1992||Rca Thomson Licensing Corporation||Retriggerable sleep timer with user-prompting mode operation|
|US5223924 *||May 27, 1992||Jun 29, 1993||North American Philips Corporation||System and method for automatically correlating user preferences with a T.V. program information database|
|US5251332||Oct 31, 1990||Oct 5, 1993||H.U.C. Elektronik Gmbh||FM receiver which detects and responds to receiving and interference states|
|US5260778||Jun 26, 1990||Nov 9, 1993||General Instrument Corporation||Apparatus for selective distribution of messages over a communications network|
|US5319707||Nov 2, 1992||Jun 7, 1994||Scientific Atlanta||System and method for multiplexing a plurality of digital program services for transmission to remote locations|
|US5345594||Dec 3, 1991||Sep 6, 1994||Pioneer Electronic Corporation||Information transmission system retransmitting information signals according to retransmission schedule|
|US5410344||Sep 22, 1993||Apr 25, 1995||Arrowsmith Technologies, Inc.||Apparatus and method of selecting video programs based on viewers' preferences|
|US5440632||Mar 28, 1994||Aug 8, 1995||Scientific-Atlanta, Inc.||Reprogrammable subscriber terminal|
|US5446919||Oct 9, 1991||Aug 29, 1995||Wilkins; Jeff K.||Communication system and method with demographically or psychographically defined audiences|
|US5497206||Aug 31, 1994||Mar 5, 1996||Samsung Electronics Co., Ltd.||Circuit for controlling an audio signal output of a television|
|US5559548||Sep 23, 1994||Sep 24, 1996||Davis; Bruce||System and method for generating an information display schedule for an electronic program guide|
|US5563648||Apr 28, 1994||Oct 8, 1996||Thomson Consumer Electronics, Inc.||Method for controlling execution of an audio video interactive program|
|US5583562||Dec 3, 1993||Dec 10, 1996||Scientific-Atlanta, Inc.||System and method for transmitting a plurality of digital services including imaging services|
|US5583563||Jan 12, 1995||Dec 10, 1996||Us West Marketing Resources Group, Inc.||Method and system for delivering an application in an interactive television network|
|US5589892||Jun 7, 1995||Dec 31, 1996||Knee; Robert A.||Electronic television program guide schedule system and method with data feed access|
|US5603077||Dec 19, 1994||Feb 11, 1997||Chaparral Communications, Inc.||Satellite system and method for remote control of a satellite signal receiver|
|US5619250||Jun 7, 1995||Apr 8, 1997||Microware Systems Corporation||Operating system for interactive television system set top box utilizing dynamic system upgrades|
|US5625693||Jul 7, 1995||Apr 29, 1997||Thomson Consumer Electronics, Inc.||Apparatus and method for authenticating transmitting applications in an interactive TV system|
|US5625864||Jun 30, 1995||Apr 29, 1997||Budow; Harry S.||Interactive digital video services system with store and forward capabilities|
|US5631903||Nov 14, 1995||May 20, 1997||Lucent Technologies Inc.||Telecommunications signaling arrangements for terminals without signaling capability|
|US5635978||May 20, 1994||Jun 3, 1997||News America Publications, Inc.||Electronic television program guide channel system and method|
|US5666293||Jul 3, 1995||Sep 9, 1997||Bell Atlantic Network Services, Inc.||Downloading operating system software through a broadcast channel|
|US5671411||Jun 7, 1995||Sep 23, 1997||Intel Corporation||Method of searching an audio/visual programming database using selected criterion having implicit logical operation|
|US5686954||Jun 6, 1995||Nov 11, 1997||Sony Corporation||Program information broadcasting method program information display method, and receiving device|
|US5724521||Nov 3, 1994||Mar 3, 1998||Intel Corporation||Method and apparatus for providing electronic advertisements to end users in a consumer best-fit pricing manner|
|US5734589||Jan 31, 1995||Mar 31, 1998||Bell Atlantic Network Services, Inc.||Digital entertainment terminal with channel mapping|
|US5740549||Jun 12, 1995||Apr 14, 1998||Pointcast, Inc.||Information and advertising distribution system and method|
|US5742680||Nov 13, 1995||Apr 21, 1998||E Star, Inc.||Set top box for receiving and decryption and descrambling a plurality of satellite television signals|
|US5760820||Feb 7, 1996||Jun 2, 1998||Hitachi, Ltd.||Digital signal transmission system with priority information forcing display of text on a receiver|
|US5767913||May 25, 1995||Jun 16, 1998||Kassatly; Lord Samuel Anthony||Mapping system for producing event identifying codes|
|US5768539||Dec 17, 1996||Jun 16, 1998||Bell Atlantic Network Services, Inc.||Downloading applications software through a broadcast channel|
|US5774170||Dec 13, 1994||Jun 30, 1998||Hite; Kenneth C.||System and method for delivering targeted advertisements to consumers|
|US5798785||Dec 2, 1993||Aug 25, 1998||Discovery Communications, Inc.||Terminal for suggesting programs offered on a television program delivery system|
|US5838314||Feb 21, 1996||Nov 17, 1998||Message Partners||Digital video services system with optional interactive advertisement capabilities|
|US5848396||Apr 26, 1996||Dec 8, 1998||Freedom Of Information, Inc.||Method and apparatus for determining behavioral profile of a computer user|
|US5848397||Apr 19, 1996||Dec 8, 1998||Juno Online Services, L.P.||Method and apparatus for scheduling the presentation of messages to computer users|
|US5864747||Aug 22, 1996||Jan 26, 1999||General Dynamics Information Systems, Inc.||Data bridge|
|US5886995||Sep 5, 1996||Mar 23, 1999||Hughes Electronics Corporation||Dynamic mapping of broadcast resources|
|US5892508||Feb 5, 1998||Apr 6, 1999||Bellsouth Corporation||System and method for providing television services|
|US5892536||Oct 3, 1996||Apr 6, 1999||Personal Audio||Systems and methods for computer enhanced broadcast monitoring|
|US5894320||May 29, 1996||Apr 13, 1999||General Instrument Corporation||Multi-channel television system with viewer-selectable video and audio|
|US5909437||May 31, 1996||Jun 1, 1999||Airspan Communications Corporation||Software download for a subscriber terminal of a wireless telecommunications system|
|US5923362||Mar 28, 1997||Jul 13, 1999||Starsight Telecast, Inc.||Merging multi-source information in a television system|
|US5940737||Feb 27, 1997||Aug 17, 1999||Hughes Electronics Corporation||Signal selector|
|US5951639||Feb 14, 1996||Sep 14, 1999||Powertv, Inc.||Multicast downloading of software and data modules and their compatibility requirements|
|US5959623||Dec 8, 1995||Sep 28, 1999||Sun Microsystems, Inc.||System and method for displaying user selected set of advertisements|
|US5978037||Feb 25, 1997||Nov 2, 1999||Deutsche Itt Industries, Gmbh||Circuit for decoding additional information in a composite signal|
|US5978855||Nov 28, 1997||Nov 2, 1999||Bell Atlantic Network Services, Inc.||Downloading applications software through a broadcast channel|
|US6005597||Oct 27, 1997||Dec 21, 1999||Disney Enterprises, Inc.||Method and apparatus for program selection|
|US6009116||Apr 15, 1997||Dec 28, 1999||Philip A Rubin And Associates, Inc.||GPS TV set top box with regional restrictions|
|US6009307||May 13, 1997||Dec 28, 1999||Qualcomm Incorporated||Multiple antenna detecting and selecting|
|US6011597||Feb 20, 1997||Jan 4, 2000||Fujitsu Limited||Signal receiving apparatus and signal receiving system|
|US6029045||Dec 9, 1997||Feb 22, 2000||Cogent Technology, Inc.||System and method for inserting local content into programming content|
|US6052554||Sep 10, 1996||Apr 18, 2000||Discovery Communications, Inc.||Television program delivery system|
|US6055514||Jun 21, 1996||Apr 25, 2000||Wren; Stephen Corey||System for marketing foods and services utilizing computerized centraland remote facilities|
|US6064376||Mar 13, 1997||May 16, 2000||United Video Properties, Inc.||Adjustable program guide display system|
|US6067107||Apr 30, 1998||May 23, 2000||Wink Communications, Inc.||Response capacity management in interactive broadcast systems by periodic reconfiguration of response priorities|
|US6067440||Jun 12, 1997||May 23, 2000||Diefes; Gunther||Cable services security system|
|US6084628||Dec 18, 1998||Jul 4, 2000||Telefonaktiebolaget Lm Ericsson (Publ)||System and method of providing targeted advertising during video telephone calls|
|US6101171||Dec 19, 1997||Aug 8, 2000||Vsli Technology, Inc.||Slot by slot PS/CS switching apparatus within the personal handy phone system|
|US6133909||Jun 12, 1997||Oct 17, 2000||Starsight Telecast, Inc.||Method and apparatus for searching a guide using program characteristics|
|US6160546||May 1, 1998||Dec 12, 2000||United Video Properties, Inc.||Program guide systems and methods|
|US6160988||May 30, 1996||Dec 12, 2000||Electronic Data Systems Corporation||System and method for managing hardware to control transmission and reception of video broadcasts|
|US6166728||Jun 7, 1993||Dec 26, 2000||Scientific-Atlanta, Inc.||Display system with programmable display parameters|
|US6169877||Jul 29, 1996||Jan 2, 2001||Telecom Italia S.P.A.||High density TV motion picture distribution network|
|US6172674||Aug 25, 1997||Jan 9, 2001||Liberate Technologies||Smart filtering|
|US6172972||Oct 9, 1996||Jan 9, 2001||Microsoft Corporation||Multi-packet transport structure and method for sending network data over satellite network|
|US6177931||Jul 21, 1998||Jan 23, 2001||Index Systems, Inc.||Systems and methods for displaying and recording control interface with television programs, video, advertising information and program scheduling information|
|US6208636||May 28, 1998||Mar 27, 2001||Northpoint Technology, Ltd.||Apparatus and method for processing signals selected from multiple data streams|
|US6209129||Aug 25, 1998||Mar 27, 2001||United Video Properties, Inc.||Passive television program guide system with local information|
|US6212682||Dec 5, 1997||Apr 3, 2001||Brother Kogyo Kabushiki Kaisha And Xing, Inc.||Sound/moving picture reproduction system|
|US6216265||Jun 11, 1998||Apr 10, 2001||Starsight Telecast, Inc.||System and method for transmitting and utilizing electronic program guide information|
|US6240555||Mar 29, 1996||May 29, 2001||Microsoft Corporation||Interactive entertainment system for presenting supplemental interactive content together with continuous video programs|
|US6263506||Aug 28, 1997||Jul 17, 2001||Sony Corporation||Data transmission and reception device and system, data transmission method and parameter setting method for data reception device|
|US6282713||Dec 21, 1998||Aug 28, 2001||Sony Corporation||Method and apparatus for providing on-demand electronic advertising|
|US6310661||Aug 7, 1998||Oct 30, 2001||Hughes Electronics Corporation||Method of broadcasting controlling data streams and apparatus for receiving the same|
|US6331876||Nov 3, 1997||Dec 18, 2001||U.S. Philips Corporation||Method of updating software in a video receiver|
|US6331979||Sep 25, 2000||Dec 18, 2001||Hughes Electronics Corporation||Method and apparatus for connecting computer to satellite antenna|
|US6348932||Mar 1, 1999||Feb 19, 2002||Sony Corporation||Provide two different types of service in a menu|
|US6363525||Aug 18, 1997||Mar 26, 2002||Wink Communications, Inc.||Method and apparatus for routing confidential information|
|US6408437||Aug 5, 1997||Jun 18, 2002||Discovery Communications, Inc.||Reprogrammable terminal for suggesting programs offered on a television program delivery system|
|US6426779||Jan 4, 1995||Jul 30, 2002||Sony Electronics, Inc.||Method and apparatus for providing favorite station and programming information in a multiple station broadcast system|
|US6430165||Aug 7, 1998||Aug 6, 2002||Hughes Electronics Corporation||Method and apparatus for performing satellite selection in a broadcast communication system|
|US6460181||Dec 29, 1998||Oct 1, 2002||Starsight Telecast, Inc.||Channels and services display|
|US6462784||Mar 15, 1999||Oct 8, 2002||Sony Corporation||Apparatus and method for displaying program contents (EPG)|
|US6463468||Jun 1, 1999||Oct 8, 2002||Netzero, Inc.||Targeted network video download interface|
|US6469753||Apr 30, 1997||Oct 22, 2002||Starsight Telecast, Inc.||Information system|
|US6481010||Mar 1, 1999||Nov 12, 2002||Sony Corporation||TV planner for DSS|
|US6553178 *||Sep 8, 1994||Apr 22, 2003||Max Abecassis||Advertisement subsidized video-on-demand system|
|US6588013||Jan 8, 1999||Jul 1, 2003||United Video Properties, Inc.||Promotional material distribution system with automatic updating of promotional material selection algorithms|
|US6675384||Dec 21, 1995||Jan 6, 2004||Robert S. Block||Method and apparatus for information labeling and control|
|US6698020||Jun 15, 1998||Feb 24, 2004||Webtv Networks, Inc.||Techniques for intelligent video ad insertion|
|US6738978||Oct 23, 1996||May 18, 2004||Discovery Communications, Inc.||Method and apparatus for targeted advertising|
|US7552458 *||Mar 22, 2000||Jun 23, 2009||The Directv Group, Inc.||Method and apparatus for transmission receipt and display of advertisements|
|US20020010930||Oct 30, 1998||Jan 24, 2002||Anthony A. Shah-Nazaroff||Method and apparatus for customized rendering of commercials|
|US20020049972||Oct 29, 2001||Apr 25, 2002||Yosuke Kimoto||Receiver, program retrieval method, and receiving method|
|US20020059602||Sep 25, 2001||May 16, 2002||Index Systems, Inc.||System and method for miniguide implementation|
|US20020073424||Feb 4, 2002||Jun 13, 2002||Eguide, Inc.||System and method for modifying advertisement responsive to EPG information|
|US20020095676||Aug 25, 1998||Jul 18, 2002||Robert A. Knee||Interactive television program guide system for determining user values for demographic categories|
|US20020120933||Apr 19, 2002||Aug 29, 2002||United Video Properties, Inc||Program guide system with flip and browse advertisements|
|US20030135853||Mar 8, 1999||Jul 17, 2003||Phillip Y. Goldman||System and method of inserting advertisements into an information retrieval system display|
|EP1030463B1||Feb 9, 2000||Jan 31, 2007||Lucent Technologies Inc.||Tuning scheme for code division multiplex broadcasting system|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8504419 *||May 28, 2010||Aug 6, 2013||Apple Inc.||Network-based targeted content delivery based on queue adjustment factors calculated using the weighted combination of overall rank, context, and covariance scores for an invitational content item|
|US8510309||Aug 31, 2010||Aug 13, 2013||Apple Inc.||Selection and delivery of invitational content based on prediction of user interest|
|US8640032||Aug 31, 2010||Jan 28, 2014||Apple Inc.||Selection and delivery of invitational content based on prediction of user intent|
|US8656441||Mar 14, 2013||Feb 18, 2014||Network-1 Technologies, Inc.||System for using extracted features from an electronic work|
|US8712382||Oct 27, 2006||Apr 29, 2014||Apple Inc.||Method and device for managing subscriber connection|
|US8719091||Oct 10, 2008||May 6, 2014||Apple Inc.||System, method and computer program for determining tags to insert in communications|
|US8782726||Mar 14, 2013||Jul 15, 2014||Network-1 Technologies, Inc.||Method for taking action based on a request related to an electronic media work|
|US8812494||Jan 4, 2013||Aug 19, 2014||Apple Inc.||Predicting content and context performance based on performance history of users|
|US8898217||May 6, 2010||Nov 25, 2014||Apple Inc.||Content delivery based on user terminal events|
|US8904464||Mar 13, 2013||Dec 2, 2014||Network-1 Technologies, Inc.||Method for tagging an electronic media work to perform an action|
|US8904465||Mar 14, 2013||Dec 2, 2014||Network-1 Technologies, Inc.||System for taking action based on a request related to an electronic media work|
|US8935718||Apr 1, 2008||Jan 13, 2015||Apple Inc.||Advertising management method and system|
|US8983978||Aug 31, 2010||Mar 17, 2015||Apple Inc.||Location-intention context for content delivery|
|US9141504||Jun 28, 2012||Sep 22, 2015||Apple Inc.||Presenting status data received from multiple devices|
|US9183247||Jul 10, 2013||Nov 10, 2015||Apple Inc.||Selection and delivery of invitational content based on prediction of user interest|
|US9256885||Mar 13, 2013||Feb 9, 2016||Network-1 Technologies, Inc.||Method for linking an electronic media work to perform an action|
|US9282359||Mar 14, 2013||Mar 8, 2016||Network-1 Technologies, Inc.||Method for taking action with respect to an electronic media work|
|US9348820||Mar 15, 2013||May 24, 2016||Network-1 Technologies, Inc.||System and method for taking action with respect to an electronic media work and logging event information related thereto|
|US20080228583 *||Mar 12, 2008||Sep 18, 2008||Cvon Innovations Limited||Advertising management system and method with dynamic pricing|
|US20080288310 *||May 15, 2008||Nov 20, 2008||Cvon Innovation Services Oy||Methodologies and systems for mobile marketing and advertising|
|US20080295128 *||Apr 1, 2008||Nov 27, 2008||Cvon Innovations Ltd.||Advertising management method and system|
|US20090099906 *||Oct 10, 2008||Apr 16, 2009||Cvon Innovations Ltd.||System, method and computer program for determining tags to insert in communications|
|US20100003963 *||Oct 27, 2006||Jan 7, 2010||Cvon Innovations Ltd||Method and device for managing subscriber connection|
|US20100274661 *||Nov 1, 2006||Oct 28, 2010||Cvon Innovations Ltd||Optimization of advertising campaigns on mobile networks|
|US20110295628 *||May 28, 2010||Dec 1, 2011||Apple Inc.||Audience targeting based on performance history of invitational content|
|U.S. Classification||725/34, 705/14.4|
|International Classification||G06Q30/02, H04N5/445, H04N7/16, H04N21/81, H04N21/45, H04N21/442, H04N21/478, H04N21/431|
|Cooperative Classification||H04N21/4316, H04N21/478, H04N21/4532, H04N5/44543, H04N7/162, H04N21/812, H04N21/44222, G06Q30/0241, G06Q30/0225|
|European Classification||H04N5/445M, H04N7/16E, H04N21/81C, H04N21/442E2, H04N21/47, H04N21/45M3, H04N21/462S, G06Q30/0225, G06Q30/0241|